@muistooshort Please note the last sentence in the answer. Possibly also look at the source code of the mentioned shim.
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millimooseJun 27 '12 at 21:26

Hmmm... kind of with mu is too short on this. Why include the shim when you have underscore's bind available to you? this.collection.each(_.bind(function() {...},this));
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Brendan DelumpaJun 27 '12 at 21:57